Have been offered an air compressor not particularily hot on these things is this a good 'un'?
Cosmo Air Compressor c/w 5 piece tool kit
1.25HP 1850rpm 115psi 8Bar 6Ltr Tank 22Kgs5cfm piston displacement
4 cfm free air delivery. £75 all inIs this a good buy haven't got a compressor but am tempted for using it to spray things etc etc.
Thanks for any advice
Cheers Dave
I'm no expert, but I reckon for good spraying you'd need a bigger tank and possibly more psi.
It's too small for serious spray work, the minimum requirement is IIRC
13cfm and a 150 litre tank otherwise you'll have to keep stopping waiting for the tank pressure to build up again. You will never get a constant usable pressure with a 6 ltr tank at 5cfm.Steve.
You won't be using it for spraying, and tools like air saws, DA sanders will mean using it for a couple of minutes and then waiting for the tank to charge again. If you're just going to use it for the odd air-powered tools, then fine. If one of the tools they;'re selling you with it is a spray gun, then they're taking you for a ride. You need a minimum of 8cfm for a spray gun, and ideally up to 12cfm. A DA sander uses up to 16cfm in continuous usage, so ideally you'll need somethjing that supplys about 8cfm with a 50 or 100 litre tank. A 6 litre tank is a waste of time for most things, excepting blowing up tyres.
Bear in mind that if you do buy one for spraying you'll need a dryer/filter and pressure regulator as well, the little knob on the end doesn't regulate well enough.
Alex
Ah, OFCOM
On or around Mon, 27 Sep 2004 19:23:28 +0100, Mother enlightened us thusly:
You'll want at least 12cfm free air delivery and preferably closer to
15cfm to spray effectively. Anything over 100 psi is fine - most air tools are rated at 90psi and you'll regulate it down to ~30psi for spraying. As a general guide, you'll want a minimum of a 2HP compressor to be getting enough air output.
Reckon its too small to be of any use at all, would be ok for an airbrush. Is the 6ltr tank a misprint or should it be 60ltr?(which makes it a little more useful) Also at that displacement it will run very few tools.
Check out the websites for Machine Mart or Northern Tool Supplies etc. (Any decent LR owner should have a Machine Mart and Screwfix catalogue next to the loo along with the back issues). Look for the tools you are likely to use and what their air needs are. Also the bigger the tank and displacement, the less you will have to listen to the racket the things make.
Sean
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